linux-kernel - Re: [PATCH 4/7] KVM: X86: Remove FNAME(update

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Message-ID: <8cac80a9aa0bcb2a636d9ee0ac633f6215843677.camel@redhat.com>
Date:   Mon, 13 Sep 2021 12:49:48 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     Lai Jiangshan <jiangshanlai@...il.com>,
        linux-kernel@...r.kernel.org
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Lai Jiangshan <laijs@...ux.alibaba.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        kvm@...r.kernel.org
Subject: Re: [PATCH 4/7] KVM: X86: Remove FNAME(update_pte)

On Tue, 2021-08-24 at 15:55 +0800, Lai Jiangshan wrote:
> From: Lai Jiangshan <laijs@...ux.alibaba.com>
> 
> Its solo caller is changed to use FNAME(prefetch_gpte) directly.
> 
> Signed-off-by: Lai Jiangshan <laijs@...ux.alibaba.com>
> ---
>  arch/x86/kvm/mmu/paging_tmpl.h | 10 +---------
>  1 file changed, 1 insertion(+), 9 deletions(-)
> 
> diff --git a/arch/x86/kvm/mmu/paging_tmpl.h b/arch/x86/kvm/mmu/paging_tmpl.h
> index 48c7fe1b2d50..6b2e248f2f4c 100644
> --- a/arch/x86/kvm/mmu/paging_tmpl.h
> +++ b/arch/x86/kvm/mmu/paging_tmpl.h
> @@ -589,14 +589,6 @@ FNAME(prefetch_gpte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
>  	return true;
>  }
>  
> -static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
> -			      u64 *spte, const void *pte)
> -{
> -	pt_element_t gpte = *(const pt_element_t *)pte;
> -
> -	FNAME(prefetch_gpte)(vcpu, sp, spte, gpte, false);
> -}
> -
>  static bool FNAME(gpte_changed)(struct kvm_vcpu *vcpu,
>  				struct guest_walker *gw, int level)
>  {
> @@ -998,7 +990,7 @@ static void FNAME(invlpg)(struct kvm_vcpu *vcpu, gva_t gva, hpa_t root_hpa)
>  						       sizeof(pt_element_t)))
>  				break;
>  
> -			FNAME(update_pte)(vcpu, sp, sptep, &gpte);
> +			FNAME(prefetch_gpte)(vcpu, sp, sptep, gpte, false);
>  		}
>  
>  		if (!is_shadow_present_pte(*sptep) || !sp->unsync_children)

Reviewed-by: Maxim Levitsky <mlevitsk@...hat.com>

Best regards,
	Maxim Levitsky